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<title>class Bundler::Resolver::Candidate - bundler: Ruby Standard Library Documentation</title>


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    <main role="main" aria-labelledby="class-Bundler::Resolver::Candidate">
    <h1 id="class-Bundler::Resolver::Candidate" class="class">
      class Bundler::Resolver::Candidate
    </h1>

    <section class="description">
    
<p>This class is a <a href="../PubGrub.html"><code>PubGrub</code></a> compatible “Version” class that takes <a href="../../Bundler.html"><code>Bundler</code></a> resolution complexities into account.</p>

<p>Each <a href="Candidate.html"><code>Resolver::Candidate</code></a> has a underlying ‘Gem::Version` plus a set of platforms. For example, 1.1.0-x86_64-linux is a different resolution candidate from 1.1.0 (generic). This is because different platform variants of the same gem version can bring different dependencies, so they need to be considered separately.</p>

<p>Some candidates may also keep some information explicitly about the package the refer to. These candidates are referred to as “canonical” and are used when materializing resolution results back into RubyGems specifications that can be installed, written to lock files, and so on.</p>

    </section>

      <section id="5Buntitled-5D" class="documentation-section">



        <section class="attribute-method-details" class="method-section">
        <header>
        <h3>Attributes</h3>
        </header>

          <div id="attribute-i-version" class="method-detail">
            <div class="method-heading attribute-method-heading">
              <span class="method-name">version</span><span
                class="attribute-access-type">[R]</span>
            </div>

            <div class="method-description">
              
              </div>
            </div>
            </section>


                <section id="public-class-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Class Methods</h3>
                </header>

                  <div id="method-c-new" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">new</span><span
                                class="method-args">(version, specs: [])</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="new-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 27</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">initialize</span>(<span class="ruby-identifier">version</span>, <span class="ruby-value">specs:</span> [])
  <span class="ruby-ivar">@spec_group</span> = <span class="ruby-constant">Resolver</span><span class="ruby-operator">::</span><span class="ruby-constant">SpecGroup</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">specs</span>)
  <span class="ruby-ivar">@version</span> = <span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Version</span>.<span class="ruby-identifier">new</span>(<span class="ruby-identifier">version</span>)
  <span class="ruby-ivar">@ruby_only</span> = <span class="ruby-identifier">specs</span>.<span class="ruby-identifier">map</span>(<span class="ruby-operator">&amp;</span><span class="ruby-value">:platform</span>).<span class="ruby-identifier">uniq</span> <span class="ruby-operator">==</span> [<span class="ruby-constant">Gem</span><span class="ruby-operator">::</span><span class="ruby-constant">Platform</span><span class="ruby-operator">::</span><span class="ruby-constant">RUBY</span>]
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                          </section>

                <section id="public-instance-5Buntitled-5D-method-details" class="method-section">
                <header>
                <h3>Public Instance Methods</h3>
                </header>

                  <div id="method-i-3C-3D-3E" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">&lt;=&gt;</span><span
                                class="method-args">(other)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="3C-3D-3E-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 67</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">&lt;=&gt;</span>(<span class="ruby-identifier">other</span>)
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">other</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>)

  <span class="ruby-identifier">sort_obj</span> <span class="ruby-operator">&lt;=&gt;</span> <span class="ruby-identifier">other</span>.<span class="ruby-identifier">sort_obj</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-3D-3D" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">==</span><span
                                class="method-args">(other)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="3D-3D-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 73</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">==</span>(<span class="ruby-identifier">other</span>)
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">other</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>)

  <span class="ruby-identifier">sort_obj</span> <span class="ruby-operator">==</span> <span class="ruby-identifier">other</span>.<span class="ruby-identifier">sort_obj</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-dependencies" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">dependencies</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="dependencies-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 33</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">dependencies</span>
  <span class="ruby-ivar">@spec_group</span>.<span class="ruby-identifier">dependencies</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-eql-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">eql?</span><span
                                class="method-args">(other)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="eql-3F-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 79</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">eql?</span>(<span class="ruby-identifier">other</span>)
  <span class="ruby-keyword">return</span> <span class="ruby-keyword">unless</span> <span class="ruby-identifier">other</span>.<span class="ruby-identifier">is_a?</span>(<span class="ruby-keyword">self</span>.<span class="ruby-identifier">class</span>)

  <span class="ruby-identifier">sort_obj</span>.<span class="ruby-identifier">eql?</span>(<span class="ruby-identifier">other</span>.<span class="ruby-identifier">sort_obj</span>)
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-generic-21" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">generic!</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="generic-21-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 43</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">generic!</span>
  <span class="ruby-ivar">@ruby_only</span> = <span class="ruby-keyword">true</span>

  <span class="ruby-keyword">self</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-hash" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">hash</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="hash-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 85</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">hash</span>
  <span class="ruby-identifier">sort_obj</span>.<span class="ruby-identifier">hash</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-platform_specific-21" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">platform_specific!</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="platform_specific-21-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 49</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">platform_specific!</span>
  <span class="ruby-ivar">@ruby_only</span> = <span class="ruby-keyword">false</span>

  <span class="ruby-keyword">self</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-prerelease-3F" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">prerelease?</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="prerelease-3F-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 55</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">prerelease?</span>
  <span class="ruby-ivar">@version</span>.<span class="ruby-identifier">prerelease?</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-segments" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">segments</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="segments-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 59</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">segments</span>
  <span class="ruby-ivar">@version</span>.<span class="ruby-identifier">segments</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-sort_obj" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">sort_obj</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="sort_obj-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 63</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">sort_obj</span>
  [<span class="ruby-ivar">@version</span>, <span class="ruby-ivar">@ruby_only</span> <span class="ruby-operator">?</span> <span class="ruby-value">-1</span> <span class="ruby-operator">:</span> <span class="ruby-value">1</span>]
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-to_s" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">to_s</span><span
                                class="method-args">()</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="to_s-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 89</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">to_s</span>
  <span class="ruby-ivar">@version</span>.<span class="ruby-identifier">to_s</span>
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


                          </div>

                  <div id="method-i-to_specs" class="method-detail ">
                            <div class="method-heading">
                              <span class="method-name">to_specs</span><span
                                class="method-args">(package)</span>
                              <span class="method-click-advice">click to toggle source</span>
                            </div>

                            <div class="method-description">
                              

                              <div class="method-source-code" id="to_specs-source">
            <pre><span class="ruby-comment"># File bundler/resolver/candidate.rb, line 37</span>
<span class="ruby-keyword">def</span> <span class="ruby-identifier ruby-title">to_specs</span>(<span class="ruby-identifier">package</span>)
  <span class="ruby-keyword">return</span> [] <span class="ruby-keyword">if</span> <span class="ruby-identifier">package</span>.<span class="ruby-identifier">meta?</span>

  <span class="ruby-ivar">@spec_group</span>.<span class="ruby-identifier">to_specs</span>(<span class="ruby-identifier">package</span>.<span class="ruby-identifier">force_ruby_platform?</span>)
<span class="ruby-keyword">end</span></pre>
                              </div>
                            </div>


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